US1209792A - Switch. - Google Patents

Description

H. w. YOUNG.

SWITCH.

APPLICATION FILED DEC .'I|. 1913.

1,209,792. I Patented Dec. 26,1916.

2 SHEETSSHEET l- 171M922 tar;

H. W. YOUNG.

swncn. APPLICATION FILED DEQH. 1913.

1,209,792. Patented Dec. 26,1916.

' 2 SHEETS-SHEET 2.

waiw

UNITED sr 'rEs PATENT OFFICE.

HERBERT W. YOUNG, OF CHICAGO, ILLINOIS, ASSIGNOR '10 DELTA-STAB ELECTRIC COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

swrrcrr.

Specification of Letters Patent.

Patented Dec. 26, 1916.

Application Med December 11, 1913; Serial No. 805,988.

To all whom it may concern Be it known that I, Hnnnsn'r W. YOUNG, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Switches, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to improvements in switches and particularly to that form of switch in which the movable member is adapted to rotate about an intermediate point whereby a circuit is-broken simultaneously at two points.

It is one of the objects of my invention to provide a construction adapted for outdoor use by reason of which the switch may be readily opened when desired regardless of the snow and ice which maybe gathered thereom It is another object of my invention to provide a coil in connection with the arcing horns through which the circuit is finally broken whereby when the rupture of the circuit occurs the are may be blown up the horns by the magnetic field producedby the current flowing through the coil, thus accelcratinj; the upward movement and the final breaking of the arc. I

It is another. obyect of my invention to provide a choke-coil in connection with a switch at each side thereof, which coils by in the claims.

In the drawings 7--F1IUI'G 1 1s a perspective view of one of my improved switches,

showing also an arm and links by which said switch is adapted to be operatively connected with a similar switch spaced at a proper distance therefrom; Fig, 2 is a top or plan view of the switch shownin 1, showing the switch in opened position, and showin 1n dotted lines an intermediate position 0 the rotating switch arm; and Fig. 3 is an enlarged detail of the'. contact elements at the left hand side of Fig.1.-

Referring to the several figures of the drawings in which correspondingvp'arts are indicated by the same reference characters,

10 indicates a beam in the form of a channel-iron adapted to be mounted upon one or more posts or to be supported in any other suitable manner. In practice itis customary to have a plurality of switchessuch as that shownin Fig. 1 supported in parallel position at such a distance from each other as to permit of the swinging of the switch arms without interference, but it is. believed to be suflicient to illustrate a single switch.

by which the invention may be fully illustrated.

11 indicates a vertical bar having a bearing in the beam 10'bywhich the i mlator 12, mounted upon the upper end of said bar, may be rotated by means of the handle or ljever 13 mounted upon the lower end of the ar. I

14 indicates an arm extending from the bar 11, and 15 indicates links pivotallyconnected at one end to the outer end of the arm 14: and adapted to be connected at their other ends with a similanarm upon an ad jacent switch by which the two switches may be, operated in unison.

16 indicates a switch arm in the form of a copper bar fixed in any suitable manner upon theinsulator 12 and adapted to rotate therewith. said switch arm having a steel bar 17 and an angle-iron 18 connected therewith to give stiffness thereto.

19--20- indicate insulators mounted upon suitable standards beam"10.' p I 2223 indicate blocks secured in any suitable mannerupon the insulators 19.-20, respectively. e 24 indicateslaminated contact members, the lower plate of each of which is provided with a'diagonally-positioned flap or wing 21 rising from the 2 BEST AVAILABLE COP 25, said contact members being secured in any suitable manner upon the bloclrs 22-23.

26-27 indicate binding blocks formed of conducting material by which the line wires 28 are connected to the contact members 241-. As will be readily understood, when the insulator 12 is turned through the medium of the lever 13 from the position shown in Fig. 1, the switch arm 16 is moved in clockwise direction in Fig. 2, moving the ends of the bars 16-47 out from under the contact members 24:. Thereupon when the switch arm 16 is moved in counterclockwise direction in said Fig. 2 the said bar 16 is adapted to resume its osition under the contact members 24, a su icient displacement of the bar 16 and of the laminated contacts -24 being procured for this purpose by reason of the diagonally-disposed wings 25, as will be readily understood. The parts are designed to be so shaped and so proportioned that a strong sliding contact shall be thus secured between the bar 16 and the contact mem bers.

29 indicates arms connected to the blocks 22-23 and extending under the contact members 24 to serve as stops, limiting the movement of the switch arm 16 in closing.

30-3l indicate arcing horns mounted in any suitable manner upon the opposite ends of the switch arm 16.

3'2-33 indicate choke-coils mounted upon the binding blocks 262'?, respectively, and provided at their outer ends with horns 3-t35. As best shown in Fig. 1, when thc switch is in closed position the horns SO JW at one end and the horns 3135 at the other end contact each other at points some little distance above the switch arm. the switch is opened. the horns have siiding contact, the point of contact approaching nearer the elbows at the lower ends of the horns as the switch opened wider. As will be seen from an inspection of Fig. '2. when the bar 16 pa s out of contact with the contact members 2i the horns are still in contact.' Consequently the bar 16 freed from the contact members 24.- v'ithout an arc, the current continuing to low through the switch and through the horns and choke inih'. By the time the switch is brought to the point where the horns are caused to finally break the contact, the bar 1*) has been moved to a considerable distance from the contact members 24, with the result that the entire are upon the final opening of the circuit occurs between the horns. l pon the breaking of the contact between the bar 16 and thc'contacts 24. the entire current directed through the coils This results in the setting up of a strong magnetic field about the coils 323. Accordingly when the final break occurs between the horns the rise of the are upon the horns is materiall accelerated by the magnetic blowout eiicct of the coils. The result is that the arc is quickly dissipated with the consequent minimum bad effects.

By reason of the use of the choke-coils 132- 53, the high frequency surges induced by the are breaking in the air are damped out and prevented from reaching the line wires or the work.

By the expedient of mounting the arcing born Si in position with the coil 32 interposed between the horn and the clamping means by which it is secured in position, I have provided a resilient mounting for the horn 31. The arrangement is such that upon the closing of the switch the horn 34 is displaced to the left in Fig. 3 longitudinally of the coil and against the resilient action of the coil, the upper part of the coil being slightly compressed.

By reason of my construction in which an underwipe contact is secured between the switch arm and the contact members 24, the contact between the switch arm and the C( tact members is to a certain extent protect tlil from the weather, preventing in many cases the accumulation of ice and snow at the contact point. Even in cases where freezing does occur at the contact point, the arrangement is such that the ice has no opportunity to l ck the parts together. It has been found in actual practice that switches of the type described are capable of being readily operated under the most severe weather conditions, at which time it is of course'thc most necessary to have the switch in condition for easy operation.

What I claim as my invention and desireto secure by Letters Patent is,-

1. in an electric switch, the combination oi a [lexibie elongated coil having a plurality of turns arranged in series side by side. means for fixing one end of said coil in position, an arcing horn rising "from the other end of said coil and held yieldingly in position thereby, and a second arcing horn movable into and out of contact with said firstmamed arcing horn for closing and opening the switch respectively, the arnmgcmentbeing such that the operation of closing the switch has the effect of displac ing the first-named arcing horn slightly from normal. position against the resilient action of the coil.

In an electric switch, the combination of a flexible elongated coil having a pluralitv oi turns arranged in series side by side. means for fixing one end of said coil in position, an arcing horn of comparatively great length as compared to the diameter of the coil formed integrally with the coil and rising from the free end thereof, and a sec- 0nd arcing horififh'qvable into and out of tudinally of the coil out of normal position contact with said first-nqmed arcing horn for bye slight compression of the upper portion closing and opening the'switch respectively, of the coil.

the contact t me second arcing horn with HERBERT W; YOUNG; 5- said first-named arcin horn upon the 0108- Witnesses:

ing of the switch having the efi'ect of dis- W. H. DE BUSK,

placing the first-named arcing horn lengi- W. A. FURNNER.

Images